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D-A-D' asymmetric structural polymer membrane PSWE and preparation method and application thereof

An asymmetric structure, D-A-D technology, applied in the direction of electrolytic organic material coating, etc., can solve the problems of single color change display, single oxidation potential, general optical contrast, etc., to achieve easy control of structure, low energy consumption for preparation, and conducive to production and utilization. Effect

Active Publication Date: 2019-03-08
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the existing D-A-D symmetric conjugated polymer PSWS such as single oxidation potential, single color display, general optical contrast, etc., the purpose of the present invention is to provide a D-A-D' asymmetric structure polymer PSWE, and find that the polymer not only Make the electrochromic display richer and have a faster response speed

Method used

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  • D-A-D' asymmetric structural polymer membrane PSWE and preparation method and application thereof
  • D-A-D' asymmetric structural polymer membrane PSWE and preparation method and application thereof
  • D-A-D' asymmetric structural polymer membrane PSWE and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0055] (1) Preparation of monomer SWE

[0056] First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphonium palladium (0.025 mmol, 0.0311g) is dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under nitrogen protection, and 2ml of deionized water is added and refluxed for 8 hours. After the system is cooled, use deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed sample, select the corresponding mobile phase (volume ratio PE:DCM=1:2) chromatography column, and finally 2,7- Dibromo-9 fluorenone is substituted for the corresponding monomer; then, 3,4-ethylenedioxythiophene (EDOT) is tinned, and EDOT (14mmol, 2g) is dissolved in redistilled tetrahydrofuran solvent (80ml) , At -78℃, slowly add n-butyllithium (1.6M) dropwise and stir for 0.5h...

Embodiment 2

[0064] (1) Preparation of monomer SWE

[0065] First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphonium palladium (0.025 mmol, 0.0311g) is dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under nitrogen protection, and 2ml of deionized water is added and refluxed for 8 hours. After the system is cooled, use deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed sample, select the corresponding mobile phase (volume ratio PE:DCM=1:2) chromatography column, and finally 2,7- Dibromo-9 fluorenone is substituted for the corresponding monomer; then, 3,4-ethylenedioxythiophene (EDOT) is tinned, and EDOT (14mmol, 2g) is dissolved in redistilled tetrahydrofuran solvent (80ml) , At -78℃, slowly add n-butyllithium (1.6M) dropwise and stir for 0.5h...

Embodiment 3

[0071] (1) Preparation of monomer SWE

[0072] First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphonium palladium (0.025 mmol, 0.0311g) is dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under nitrogen protection, and 2ml of deionized water is added and refluxed for 8 hours. After the system is cooled, use deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed sample, select the corresponding mobile phase (volume ratio PE:DCM=1:2) chromatography column, and finally 2,7- Dibromo-9 fluorenone is substituted for the corresponding monomer; then, 3,4-ethylenedioxythiophene (EDOT) is tinned, and EDOT (14mmol, 2g) is dissolved in redistilled tetrahydrofuran solvent (80ml) , At -78℃, slowly add n-butyllithium (1.6M) dropwise and stir for 0.5h...

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Abstract

The invention provides D-A-D' asymmetric structural polymer membrane PSWE and a preparation method and application thereof. 2,7-Dibromo-9-fluorenone shown as formula 1 is subjected to coupling reaction under the action of an electron donating group to form an asymmetric DAD' structural monomer; the asymmetric DAD' structural monomer in a tri-electrode electrolytic cell is subjected to polymerization at room temperature via cyclic voltammetry polymerization process to obtain the asymmetric DAD' structural polymer membrane on a working electrode. The preparation method is simple to perform; themonomer yield and polymer membrane purity are high; the product prepared has more outstanding multicolor displaying and excellent electrochromic performance; the product is applicable to electrochromic devices.

Description

Technical field [0001] The invention relates to a DA-D' (donor-acceptor-donor') asymmetric structure polymer membrane with multicolor display and a preparation method thereof, and the DAD' asymmetric structure polymer membrane PSWE can be applied For the preparation of electrochromic devices. technical background [0002] Since the discovery of polymer electrochromic (PEC) materials, compared with inorganic electrochromic materials, it has the advantages of easy modification, high coloring efficiency, high optical contrast, and fast response speed. It is considered as the next generation EC One of the development directions of materials. At present, the methods to realize electrochromic polymer multicolor display through molecular design or modification mainly include the design of donor-acceptor (DA) molecular structure and the copolymerization between different molecules. Among them, the copolymerization product is different due to the molecular structure. Certainty is not co...

Claims

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Application Information

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IPC IPC(8): C08G61/12C08J5/18C25D9/02
CPCC08G61/126C08G2261/11C08G2261/18C08G2261/3223C08G2261/3247C08G2261/54C08J5/18C08J2365/00C25D9/02
Inventor 张诚张凯立李林刘军磊刘刚欧阳密
Owner ZHEJIANG UNIV OF TECH